Swivel t coupling



Feb. 27, 1940. P. F. THAU SWIVEL I COUPLING Filed Dec. 22, 193'? P. FRANK'EL THA u,

INVENTOR ATTORNEY 'Patentedi 'eb. 21, 1940 i 2,191,688

UNITED STATES PATENT OFFICE n i i 2,191,688 a v I swIvEL T COUPLING. Philip Frankel Than, New York, N. Y. Application December 22,1937, Serial No. 181,135 1 mm. (01. 285-975) This invention relates generally to improveother pipe line such as lug I l, the said pipe line ments in a swivel T coupling, but more specifically 48' and lug I I being secured to and movable with to a coupling which is especially useful in conthe oil burner door 33. junction with a hot oil circulating system used The main coupling piece It! is provided with a l for oil burners. tubular fitting IS, the latter being adapted to be .i The main object of the invention resides in the in communication with the vertical bore I3 whereprovision of a swivel T or coupling which is fluid by fluid passing into the said fitting I6 is bytight for fuel oils passing therethrough under passed through bore l2 into the pipe or'feeding pressure, which operates with a high degree of line 48. The tubular fitting i6 is provided with efficiency and ease and which is easily assembled, an external thread I! at the upper end thereof to l disassembled and secured in the circuit of an oil engage the return line 56 issuing from heater F. circulating system; The bore l8 of tubular fitting l6 proceeds in com- A further object of the invention resides in. the municating relation with bore l3 and bore l2 of provision of a coupling wherein the main coupling the main coupling piece l0.

piece is adapted to be secured to and connected Tubular fitting i6 is provided with a bottom 15 with a line movable with and secured to the oil flange I9 whose upper walls are flared or tapered, burner door and wherein a tubular fitting assothe undersurface of the said fiange I9 being ciated with the main coupling piece is connected adapted to sit on the bottom wall of gland cham- 'to a stationary return line. ber l5 above conical packing seat 14, which latter These objects and other incidental ends and contains packing 25, as shown in Figure 2. Thus, 20 advantages of the invention will hereinafter apit is seen that tubular fitting I6 is rotatable withpear in the progress of the disclosure ,and as in gland chamber l5 by means of the undersurpointed out in the ,appended'claim. face of fiange l9 bearing against the bottom wall Accompanying this specification is a drawing of the gland chamber. a showinga preferred form of the invention as ap- A gland ring 20 isin slidable engagement with plied to a novel hot oil circulating system where fitting l6 and is provided with an upper shoulder in corresponding reference characters designate 2| adapted to abut the upper wall of gland chamcorrespondlng parts throughout the several views ber l5, while the lower edge of the said gland and wherein: ring is provided with a taper 22 of an angle con- Figure l is a front view in elevation showing responding to the taper of flange l9 whereby a 30 an oil burner door and a hinge post "secured to proper fitting is effected. The small space bethe wall of the furnace, the said door and hinge tween the outer walls of gland ring 20 and the post containing piping and apparatus including inner walls of gland chamber I5 is utilized for the above mentioned swivel T coupling. the receipt of packing 23. 24 represent a disc Figure 2 is a view of the swivel T coupling parof packing between the upper surface of shoulder 5 tially in elevation and partially in section along 2| and the upper wall 21 of a lock nut 26 which the vertical axis. is internally threaded to engage the externally Figure 3 is a diagrammatic view of a hot oil cirthreaded gland chamber IS, the said lock nut 26 culatlng system; having a central hole 26' to permit penetration 40 In accordance with the invention and in actherethrough of tubular fitting I6. 40

'cordance with the preferred form thereof shown Thus, coupling piece I0 together with lock in conjunction with a novel hot oil circulating nut 26 and gland ring 20; all secured together in system, the swivel T coupling comprises a main fluid tight relationship, are integrally rotatable coupling piece Ill having a polygonal outer surabout the bottom wall of tubular fitting I6 and face, the said coupling piece having at one end an the flared walls 22 and side walls thereof, as 45 externally threaded and solid'connecting piece ll. best shown in Figure 2. Flange IQ of fitting l6 l2 represents a lateral and internally threaded abuts against the lower tapered edge 22 01' the bore communicating with a central vertical bore gland ring 20 and is thereby prevented from It, the latter at its upper edge being provided upward displacement when lock nut 26 engages with a flared or 'conical seat I, the latter comgland chamber l5. v 50 municating with an enlarged and externally The swivel T above described is especially threaded gland chamber '5. It isto be observed adap le r l ing systems where that bore I2 is adapted to engage a pipe line such it is essential that a by-pass coupling have fluid as 48' shown in Figure 1, while the connecting tight properties. Thus, in Figures 1 and 3 the piece H is adapted to be secured to a lug on answivel T is shown in combination with an oil 5 burner circulating system comprising an oiltank, a pumping line therefrom, an oil pressure regulator in the pumping line, a feed line and a return line for the excess oil emanating from the pumping line, a heater into which the said return line passes, a line between the heater and the swivel T throughwhich the heated oil passes, and a line from the swivel T'to the feedline.

More specifically, an oil-burner construction and system shown diagrammatically in the drawing shows a hinged post wall 28 and hinges 29 and 30 afiixed to the wall of a furnace. The fur-, nace door 33 is provided with arms 3| and 32 Numeral 34indicates an inlet pipe extending from the pumping line ema which turn on post 28;

nating from oil tank G, thesaid inlet pipe com 'municating'with an inlet bore 34 in hinge .post 28, while numeral 35 represents the conventional v swivel arm in post 28 within bushing 36, 31 "5eing the lower threaded outer surface of hinge post 28 to which a cap 38'is secured. 39 similarly represents'an outlet pipe communicating with the return line for the excess oil emanating from the pumping line andproceeds from the hinge post 28 and being in communication with bore 39' within the said hinge post, the swivel arm 49 in post {28 being within a bushing 4|, 42 representying the upperthreaded outer surface-of hinge post 28 to which cap 43 is secured. Thus has been described the conventional means in which arms or pipes 35 and 40 swivel with the opening and 'closing of furnace door 33.

Secured to inlet pipe 35 is an oil 'pump A from which extends a pipe line 44, the oil pump A sucking oil from tank G and forcing same into pipe 46, 39 5| into heater F. When properly heated, the ,oil isreturned through pipe'56, IS, the swivel T, 48, electric heater C and atomizer The partly heated oil coming-out of heater Fiis returned through pipe 52, pressure regulating valve J, 53, 54, fitting 55, pipe By opening valve B, when heater F is cold, oil is delivered from "pump A direct to electric heater C through 44 and 48. Thus the oil is heated to two degrees of temperature, preferably and degrees. I The warm oil from-heater F proceeds from pipe 52 through an oil pressure regulating valve J, through pipes 53 and 54 to the oil tank- G, from swivel T connection, through pipe a gland ring slidable on. said abutting the bottom flange thereof and. being substantially along the walls of the gland chamber, and a. lock the oil tank G by means of fitting '55 and pipe" 55' outwardly. The fitting 55 atone sidels pro- Y vided with an opening 55' to release any gas bubbles in the system between-pipes ,54 and 55'. The oil from 55 proceeds through a valve N along through the hinge post'28, through pipe 35; In this way the oil in tank G is preheated. However, the. hot oil that issues from theheater .F-,

through pipe 56 is not returned to tank G; butis directly by-passedthroug'h the swivel T into the feed pipe 48., hot oil from heater Fproceeds through pipe 56, through l6 through the electric heater C, through needle valve'D to atomizer E. The oil tank G is provided with the usual vent line'K and fill line L.

pipe 50, through valve 0, through oil-strainer H,

The above system'thus afiords a method of preheating the "fuel oil before the samegoes to the feed line by means of a hot water oil heater.

I wish it understood that minor changes and variations in the integration, material, position and shaping of parts of the swivel T connection, together'with minor changes in the system, may all be resorted to from the scope I claim: A swivel T for an oil burne r door post comof the appended claim.

. prising a main coupling piece having ofiset communicating boresand a securing'lug at the lower end of and along the longitudinalaxis of the without departing from the spirit of the invention and without departin coupling piece to secure'saidcoupling piece to the door post, a gland chamber in said couplingpiece communicating with one of said bores, a tubular fitting on which the coupling piece swivels. the said fitting. havingia bottom flangein rotatable. engagement with the seat of the gland chamber, tubular fitting and adapted to sit within and full length of the gland chamber, packing between the outer walls of the gland ring and the inner nut engageable with the main coupling piece and be. ing adapted to lock the gland ring in the gland chamber. F 5

. PHILIP FRANKEL .THAU. 

